KR950000130B1 - Information recording & reproducing device - Google Patents

Abstract

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Description

Information recording and reproducing apparatus and information recording method

1A is an explanatory diagram showing the relationship between a block number, a physical sector number, and recording information via recording small capacity information;

1 (b) is an explanatory diagram showing the relationship between a block number, a physical sector number and recording information via recording large capacity information;

1C is an explanatory diagram showing a relationship between a block number, a physical sector number, and recording information via recording continuous information.

Fig. 2 is a time chart showing the flow of information via a small amount of information.

3 is a time chart showing the flow of information via the recording of large-capacity information.

4 is a block diagram of an information recording and reproducing apparatus.

5 is a schematic plan view of a magneto-optical disk.

6 is an enlarged plan view of a magneto-optical disk.

Fig. 7 is a block diagram of an information recording and reproducing apparatus via which information is recorded by an external apparatus.

Fig. 8A is an explanatory diagram showing the arrangement of image and sound information in the information recording and reproducing apparatus.

Fig. 8B is an explanatory diagram showing the arrangement of information via rewriting of voice information;

9 is an explanatory diagram showing a block configuration and a sector configuration via recording image information.

10 is an explanatory diagram showing the flow of information via recording image information.

11 is an explanatory diagram showing a block configuration and a sector configuration via recording image information.

12 is an explanatory diagram showing a block configuration and a sector configuration via recording voice information.

Fig. 13 is a schematic diagram showing a state in which a magneto-optical disc is divided in each area.

14 is a schematic diagram showing the relationship between a physical sector, a block number, and a track number;

Fig. 15 is another block diagram of the information recording and reproducing apparatus.

Fig. 16 is a time chart when repeated recording and reproducing check operations in block units are repeated.

17 to 22 show a conventional example.

17 is a schematic plan view of a compact disk.

18 is a schematic diagram showing a frame signal format of a compact disc.

Fig. 19 is a schematic diagram showing the color format of a compact disc.

20 and 21 are explanatory diagrams showing the arrangement of image and audio information in a conventional electronic still camera, respectively.

Fig. 22 is a time chart via repeated recording and reproducing check operations in units of blocks.

* Explanation of symbols for main parts of the drawings

1: Magneto-optical disc 2: Guide groove

3: spindle motor 4: optical head

5: coil 6: terminal

7: recording signal processing circuit 8: coil driver

9: CLV Control Circuit 10: Regeneration End

11: pre-record information detection circuit 12: address detection circuit

13: Conveyor 14: TOC Memory

15: reproduction signal processing circuit 16: sub code detection circuit

17: sub code generation circuit 18: interface

19: switching circuit 20: data generating circuit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording and reproducing apparatus and an information recording method for recording and reproducing various types of information on a recordable recording medium such as various rewritable optical discs by using a so-called incomplete interleave method.

Background Art Conventionally, so-called compact discs (hereinafter referred to as CDs) in which continuous information such as music information is recorded as digital signals by optically detectable micropits are widely used. Playback is performed by a CD player for exclusive use of CD playback.

18 and 19 are schematic diagrams for explaining the signal format used in the CD.

As shown in Fig. 18, one frame 31a of the recording signal includes a frame synchronization signal 31b indicating the beginning of the frame, a sub code 31c (detailed later), which is additional information of the data, It consists of a data field 31d which added an 8-byte error detection correction parity code to 24 bytes of main data as information.

Further, in the data field 31d, the data is detected and corrected by an error detection correction method involving an incomplete interleaved called CIRC (Cross Interleaved Reed Solomon Code).

As shown in FIG. 19, the subcode 31c of 98 frames (constituting one sector 32a (which constitutes one subcoding frame)) constitutes one subcoding block 32c, and this subcoding block Based on 32c, a track number (data is assigned with a song number via music information), absolute address information on the disc, and the like are specified.

Further, the frame synchronizing signal 32b and the data field 32d indicate the state where the frame synchronizing signal 31b and the data field 31d of FIG.

If the length of one sector 32a, that is, the sector length is 13.3 ms, for example, is 75 sectors, one second. At this time, the sector number on the disk can be expressed by a combination of " minute " and " second ": " sector number within 1 second (i.e., any value between 0 and 74) " The numbers form a sequence of time information and positional information that sequentially increases in the innermost disk. 17 is a schematic diagram showing the area arrangement on the disc in the CD.

The disc 33 includes a main information recording area 33a including a sector number by main information such as music information and a sub code, and additional information relating to each main information recorded in the main information recording area 33a. For example, a track recording start sector number and the like are constituted by a TOC (Table Of Contents) area 33b (displayed by hatching for convenience).

With the above format, in the CD player, the sub code information of the TOC area 33b is read when the disc 33 is loaded, so that the number of pieces of main information (equivalent to the number of pieces of music information and the number of pieces of music). ) And the sector number of the recording start position, and access to a desired track for subsequent playback instruction is recorded in the subcode information read from the TOC area 33b and the main information recording area 33a. This is executed quickly by checking the sector number by the subcode.

On the other hand, the conventional CD or CD-ROM (Compact Disk Read Only Memory) is used for storing and using various information such as music information or computer information in a rewritable optical disk such as a magneto-optical disk which is being developed in recent years. It is desirable to provide an information recording and reproducing apparatus which has a common reproduction method among the above and is compatible.

Via this, in particular, on an optical disc on which information is not recorded, there is no absolute address using a subcode by the signal format of the CD or a frame synchronization signal for use in CLV control. The access operation to the position is not performed, and the CLV control necessary for recording and reproduction becomes impossible.

Thus, as a recording method of the absolute address instead of the recording by the sub code, after the bi-face mark modulation of the absolute address, the guide grooves of the optical disc are moved in the radial direction of the disc according to each bit "0" or "1". Or it is proposed to make it convenient to the outside, or to change the width of a guide groove (refer USPAT. No. 4,907,216).

If the frequency band of the absolute address due to the modulation of the bi-face mark and the frequency band of the recording information subjected to EFM (Eight to Fourteen Moduration) modulation are made different from each other, both can be reproduced separately and there is no recording information. The access operation is also possible in the area using the above absolute address recorded by the convenience of the guide groove.

In addition, by using the reproduction carrier component of the absolute address for the CLV control, accurate speed control is possible, and this CLV control can be performed even during recording.

The rewritable magneto-optical disc, which is compatible with the above-described CD, can be expected as an information recording medium capable of recording various kinds of high density such as character information and image information for the first time, especially in general households.

For example, it is conceivable to use the rewritable optical disc as a recording medium of an electronic still camera capable of recording audio information.

Background Art Conventionally, as an electronic still camera having a recording function for recording comments and the like for each still image, a so-called floppy disk is used for the recording medium.

Therefore, it is conceivable that via a rewritable optical disc as a recording medium also has a configuration similar to that via a propi disc with respect to the arrangement of image and audio information on the disc. As the arrangement method of the image and audio information via the image, as shown in FIG. 20, image information recording areas 11, 12, ... in the recording area (capacity is converted in time, for example, one screen). 3 to 4 seconds per screen) and audio information recording areas A1, A2, ... (for example, 10 seconds per screen) are recorded alternately, and audio information recording areas A1, It is conceivable to make the capacity of A2, ...) constant.

By the way, the actual voice information is shorter than the voice information recording areas A1, A2, ..., so that the utilization efficiency of the recording area is reduced, or conversely, the voice information to be recorded is the voice information recording area A1. It is easy to cause inconvenience such as not being settled in, A2, ...). In particular, via the case where the audio information is not recorded at all, the use efficiency is significantly reduced.

Thus, as shown in FIG. 21, the image information recording areas 11, 12, ... and the audio information recording areas A1, A2, ... are alternately arranged, and the audio information recording area ( It is also conceivable to configure the capacity of A1, A2, ...) so that only the desired length can be recorded for audio information for each still picture.

By the way, the utilization efficiency of the recording area is improved, but there is a restriction that the length of the audio information cannot be longer than the initial audio information because of the need to protect the image information recorded behind the audio information rewriting.

In addition, since the length of the blank area which became the original audio information recording area (A1, A2, ...) is not constant, after the audio information is no longer needed and this is deleted, this area is used for recording the image information, for example. There is also a problem that the use of diesel fuel is reduced in utilization efficiency and complicated in address management.

Therefore, when attempting to rewrite the information using the signal format of the CD, the information of the target physical sector position is distributed to a plurality of sectors on the actual disk by CIRC (incomplete interleaving). It becomes difficult to finish by rewriting only sectors.

In addition, on the actual disk, data to be rewritten and data before and after it are mixed in the same sector, and the relation of erra correction is given between them. Therefore, in order to maintain this association, it is necessary to rewrite only desired data. It becomes difficult (refer to Unexamined-Japanese-Patent No. 1-55787 etc. in detail).

In other words, according to the CD format, all the recording information is continuous. However, if one copy of the recording data is rewritten, the relationship between the miscorrection between the data before and after the recording start point and the end point of the rewritten data is lost. Regeneration error is easy to occur. This is because, since the minimum access unit of the information recording position is a sector, there is a sector whose history cannot be used before and after the sector in which the information is rewritten, thereby lowering the disk utilization rate.

In order to prevent such reproduction errors, for example, dummy data including a parity code for correcting an error generated at the beginning or the end of the data before and after the data actually recorded and reproduced are stored. It is conceivable to install additional sectors as recorded.

For example, in order to show the CIRC original correction capability via CD format, the non-integrated interleaved subcarrier wavelength requires 105 frames. /98)#1.07 sectors, that is, it is preferable to provide additional sectors substantially two sectors.

In addition, the whole additional sector is also useful as a drawing service of a phase locked loop (PLL) at the start of rewriting.

However, when additional sectors are provided, the efficiency of use of the disk is reduced.

Also, in the rewriting of information, a block is formed for each predetermined number of sectors in order to facilitate address management and the like, and additional sectors of two sectors are set at the end of each block, for example, as described above. In this case, it is conceivable that the information be rewritten in units of blocks.

However, it is necessary to record additional data in each additional block by setting additional sectors in each block, by recording a large amount of data over a plurality of sectors, and in additional sectors set in each block. At the same time, there is a problem that the transmission speed of data is reduced.

Therefore, in order to minimize the decrease in the utilization efficiency of the disk by setting additional sectors, the number of sectors constituting the minimum information rewriting unit (hereinafter referred to as a block) per one time may be increased. Accessing the original use efficiency of the CD.

However, a block having a large enough sector number for all kinds of information is not suitable for information use with a small amount of data such as character information, and there is also a problem that the recording time takes a long time in vain.

If the size of the block (number of sectors per block) is one-off for the content of information to be recorded, and the recording and reproduction check operation of one block unit is to be performed on the CD's CLV format, In particular, the case where the length of one block is shorter than one rotation of the disc is not preferable because the waiting time from the recording peripheral to the reproduction shank becomes long on the outer peripheral side of the disc.

To illustrate this, as an example, FIG. 22 shows a time chart via continuous recording and playback check operations in units of blocks using a conventional disk capable of recording in the CLV method.

Further, in the figure, the periods indicated by t _o and t _n indicate the time required per one revolution of the disc at each information position, and w _o denotes the write operation of the block number 0 at the peripheral end of the disc. R _o indicates the reproduction check operation after the zero recording operation of the block number, W _n indicates the recording operation to the n number of the block number at the outer peripheral side of the disc, and R _n indicates the _n of the block number. The playback check operation after the burn recording operation is displayed.

Here, the disk rotation waiting time for moving the reproducing operation check in the recording operation is the time obtained by subtracting the operation time of W _o (or W _n ) from the required time t _o (or t _n ) of one disc rotation. . In the figure (b) which shows the disc outer peripheral side, it turns out that the said disk rotation waiting time increases compared with the figure (a) which shows the disc inner peripheral side.

Therefore, there is a problem that the amount of information per unit time, in other words, the data transfer rate is lowered at the disc outer peripheral side.

In the host apparatus (so-called personal computer or the like) that manages various types of information, it is generally preferable to perform recording and sector-by-sector or block-wise recording in the same way as a conventional PROFI disk or hard disk.

However, according to the format, since two sectors of additional sectors are required before and after the sector xj for each recording time, for example, sectors corresponding to the additional sectors need to be transferred in total. Furthermore, it is necessary to manage the sector usable as the data area and the unusable additional sectors via the rewriting operation of the information, and the management becomes very complicated.

Furthermore, for a large number of sectors that record a large amount of information such as digital music information at one time, the nutrition is small enough to cut all the information and the end of the information without setting additional sectors. There is no.

However, via a sector in which character information or the like is written at a time is small. In general, it is necessary to set an additional sector, and the above-mentioned problems often arise with it.

An object of the present invention is to record and reproduce information by designating a block number without specifying additional sectors necessary for recording and reproduction using an incomplete interleaved method, and to designate an address in units of blocks. An information recording and reproducing apparatus for managing and an information recording method.

In order to achieve the above object, the information recording and reproducing apparatus according to the present invention comprises arithmetic means for calculating a physical sector number based on a block number assigned to each block, and recording for recording information based on the calculated physical sector number. The block is constituted by a multisector added to each of the predetermined number of effective sector groups and the whole and the rear part thereof.

According to the above configuration, the host apparatus connected to the information recording and reproducing apparatus only allows the block number of the block to be recorded or reproduced, and allows the information recording and reproducing apparatus to record and reproduce the information.

The host apparatus can easily manage information of the information recording and reproducing apparatus by designating addresses in units of blocks.

Another object of the present invention is to make effective use of the recording area by dividing each information group in a capacity-variable information group and a constant information group in successive recordings.

In order to achieve the above object, the other information recording and reproducing apparatus according to the present invention records the data of variable capacity information in the order of the small blocks of the block number, and in the order of the block numbers for the information group of the constant capacity. And recording control means for recording.

According to the above constitution, a blank area is continuously generated when only the information group having a variable capacity is collectively erased.

Therefore, after that, information having a constant capacity can be efficiently recorded in the blank area.

In addition, for information of variable capacity, the blank area is generated only at one place between the variable information group and the constant information group, and as a result, the effective use of the recording area can be realized.

A further object of the present invention is to record various types of information in a block having an optimum number of sectors in accordance with each data length by arranging a plurality of blocks of different sectors on one recording medium.

In order to achieve the above object, the information recording and reproducing apparatus according to the present invention comprises a plurality of units arranged as a set of blocks with a minimum number of blocks consisting of a predetermined number of sectors, the arrangement information on the recording medium of each unit, A recording medium including a unit information area for recording information on the number of sectors constituting the block of each unit is used, and in the unit designated at the time of loading the recording medium, the information is read out and recorded and reproduced. Means for specifying a physical sector number corresponding to the block based on the read information.

According to the above configuration, various kinds of information can be recorded in corresponding blocks of one recording medium according to the data length.

As a result, the recording area of the recording medium can be used efficiently, and the average recording / reproducing speed of the data can be speeded up.

Furthermore, in addition to the unit for recording a file, a unit for recording file management information may be set for file management.

Another object of the present invention is to improve the utilization efficiency of a recording medium by loading a predetermined number of all-added data and back-added data only in a large volume, leading and ending blocks having data to be recorded on a large number of blocks. It is in doing it.

In order to achieve the above object, the information recording and reproducing apparatus according to the present invention adds multi-sectors to all and rear portions of each block at the time of recording small-capacity data, while at the beginning and end of the block at the time of recording large-capacity data. Means for adding a predetermined number of all-added data and rear-added data only, and the block is constituted by a multisector added to the whole and the rear part of each of the predetermined number of effective sector groups.

According to the above configuration, since additional data is added to the multi-sector at the time of recording based on the size of the data capacity, the utilization efficiency of the recording medium can be improved.

Further objects, features, and excellent points of the present invention can be fully understood from the following description.

Further, the advantages of the present invention will become apparent from the following description with reference to the accompanying drawings.

EXAMPLE

An embodiment of the present invention will be described with reference to FIGS. 1 to 6 as follows.

As shown in FIG. 5, in the magneto-optical disc 1 rewritable as a recordable recording medium, a TOC area 1a is set at its inner peripheral end couplet, and a majority of the outer circumference of the TOC area 1a is set. The area is an information recording area 1b.

In the information recording area 1b, various pieces of information such as characters, images, and code data are recorded with music information as the foremost, while in the TOC area 1a, each piece of information recorded in the information recording area 1b is stored. The additional information, for example, the start sector position and the end sector position for each piece of information, is recorded.

As shown in FIG. 6, in the magneto-optical disk 1, the TOC area 1a and the information recording area 1b have a plurality of spiral guide grooves 2 (indicated by hatching on the contrary) in advance. It is formed at predetermined intervals in the direction.

The absolute address (address) on the disc corresponds to the guide groove 2 of the magneto-optical disc 1, corresponding to whether each bit is "1" or "0" of binary logic after biface mark modulation. Recorded by biasing on the outer or inner side in the radial direction.

The above absolute address is used for displaying the position on the disc and also used as rotation control information when performing CLV control or the like.

Further, in the present embodiment, since the absolute address corresponds to each sector in the CD format, the absolute address is hereinafter referred to as a physical sector number.

In the block diagram of FIG. 4, the information recording and reproducing apparatus according to the present embodiment includes a spindle motor 3 for supporting and rotating the magneto-optical disk 1, and a laser on the magneto-optical disk 1 during recording and reproduction. An optical head 4 for irradiating light and a coil 5 for applying a magnetic field to the magneto-optical disk 1 at the time of recording are provided.

The optical head 4 and the coil 5 constitute a recording means, and record information in the first or second mode based on the control by the controller 13 as will be described later.

The information recording and reproducing apparatus according to the present embodiment is configured to record in a so-called magnetic field modulation method, and overwrite (no erasure operation is required) for superposing new information on the recording agent information is performed.

The information recording and reproducing apparatus receives instructions such as recording / reproducing from a so-called upper apparatus (not shown in the figure) such as a personal computer, or inputs / outputs data such as text or image information to and from the upper apparatus. The terminal 6 is provided.

When recording, information input via the terminal 6 from the host apparatus is supplied to the switching circuit 19 as digital data f at the interface 18.

In the switching circuit 19, the digital data f in the interface 18 and the additional data e in the sector data generation circuit 20 are input. When the controller 13 receives an instruction such as recording of information from the host apparatus via the terminal 6 and the interface 18, the controller 13 sends a switching instruction to the switching circuit 19.

The switching circuit 19 is configured to select one of the data e and f based on this switching instruction, and output it to the recording signal processing circuit 7 as digital data h.

In addition, the host apparatus means that commands such as recording and reproduction can be generated for the present recording and reproducing apparatus.

In the recording signal processing circuit 7, the generation part of the error detection and correction parity is performed on the digital data h, and sub code information in the sub code generation circuit 17 is added, and then EFM is modulated. A signal is added to supply the coil driver 8.

The coil driver 8 drives the coil 5 based on the supplied signal, and at the same time, laser light is irradiated to the magneto-optical disk 1 from the optical head 4, thereby recording the signal. .

Further, the signal format here can be, for example, the same as that shown in Figs. 18 and 19 as a conventional example.

On the other hand, at the time of reproduction, the signal reproduced by the optical head 4 is amplified by the reproduction end 10 and sent to the pre-record information detection circuit 11 and the reproduction signal processing circuit 15.

The pre-record information detecting circuit 11 is constituted by, for example, a band pass filter and a phase locked loop (PLL), and the clock synchronized with the PLL with respect to the pre-record information in the reproduction signal extracted by the band pass filter. Is supposed to be generated.

Then, a clock synchronized with the pre-recording information which becomes the bi-face mark modulation signal of the absolute address is supplied to the CLV control circuit 9. In the CLV control circuit 9, a comparison is made between the synchronous clock in the pre-record information detecting circuit 11 and the reference frequency held therein, and rotation control of the spindle motor 3 is performed by the difference signal. .

As a result, accurate CLV control is realized.

The prerecord information in the reproduction signal extracted by the prerecord information detection circuit 11 is supplied to the address detection circuit 12. The address detection circuit 12 has, for example, a biface mark demodulation circuit and an address decoder.

The pre-record information extracted by the pre-record information detecting circuit 11 is demodulated by the bi-face mark demodulation circuit, and then decoded by an address decoder into an address on the disc, i.e., a physical sector number, and this physical sector number is controlled. It is supplied to the roller 13.

In the reproduction signal processing circuit 15, EFM demodulation is performed on the basis of the magneto-optical signal component in the reproduction signal supplied from the reproduction end 10, and further, an error detection correction process using the parallax for error detection correction is performed.

Then, the reproduction processing control signal data is output from the terminal 6 to the host apparatus via the interface 18. The subcode information EFM demodulated by the reproduction signal processing circuit 15 is supplied to the subcode detection circuit 16. The sub code information recognized by the sub code detection circuit 16 allows the controller 13 to receive an instruction such as recording / reproducing or the like through the terminal 6 and the interface 18 from the host apparatus.

The controller 13 receives the physical sector number of the address detection circuit 12, recognizes the position of the optical head 4 on the magneto-optical disk 1, and the optical head 4 and the coil 5 Has an access function for moving the optical head 4 and the coil 5 to a predetermined position by means of a moving mechanism (not shown in the figure).

Further, the controller 13 selects the subcode information output from the subcode detection circuit 16 and stores it in the TOC memory 14 or the TOC in the host apparatus provided through the interface 18. Information or the like relating to the contents is stored in the TOC memory 14 or the contents of the TOC memory 14 are read.

The subcode information in the TOC memory 14 is supplied to the subcode generation circuit 17 as necessary, where the subcode is generated and EFM modulated by the write signal processing circuit 7 to provide a coil driver 8. Supplied to. As a result, the subcode information in the TOC memory 14 is recorded in the TOC area 1a of the magneto-optical disk 1.

Fig. 1 (a) shows small capacity information (da) which is suitable for recording and reproducing in units of blocks, such as relatively small information such as character information or management information such as a directory, according to the first mode of the present invention. It is a schematic diagram which shows the arrangement of the information via the gas stored in the magneto-optical disk 1. FIG. 1A shows the block structure II, which shows the sector structure of each block.

As shown in Figure 1, each block is assigned a block number such as B0, B1, B2 ..., etc., and as shown in Figure II, the individual sectors in each block are based on time. "Min": "second" A physical sector number consisting of a combination of sector numbers within 1 second (any one of 0 to 74 because 75 sectors are included in 1 second in this embodiment) is assigned.

The data dg of each block is composed of eight sectors. For example, a physical sector number (01: 00: 00) is provided at the head of the block No. B0. In information recording, the controller 13 responds to a recording command of a predetermined block range provided through the interface 18 in the host apparatus, wherein the predetermined block number range corresponds to a value of an actual physical sector number. Does arithmetic

It will be described in detail using the example of Figure 1 (a) as follows.

For example, when the host apparatus has a recording instruction for blocks Nos. B1 to B3, the number of sectors per block is set to " 8 ", and as described above, the physical sector at the head of the block No. B0. It is predetermined that the number is provided as (01: 00: 00).

Therefore, the physical sector number at the beginning of the block of the block number B1 at which recording is started is (01: 00: 00) + block number (1) x sector (8) = (01: 00: 08), and the block is easily provided. It is possible to obtain the physical sector number at the head of the block B1 by calculation.

In this way, when the physical sector number of the block of the block number B1 is obtained, an access operation or the like to the block is performed.

As shown in Fig. 2 (a), n ₁ provided by the sector data generation circuit 20 for the block of the block No. B1, in this case, all of the two additional parts are to be recorded in the sector. d1 (FIG. 2 (d) and n ₂ , in this case, an additional data e (FIG. 2 (b) and the host device provided via the interface 18) which becomes the back part data d2 to be recorded in two rear part sectors. The divided data D1 obtained by dividing small-capacity information da such as character information into four sectors corresponding to the effective sector dd (digital data f serving as the drawing plane c) is sequentially switched by the switching circuit 19 to provide desired information. The recording is done.

The block writing procedure of the block number B1 is described below.

First, all the additional data d1 to be recorded in two sectors in the sector of the physical sector number (01: 00: 08) is provided by the sector data generation circuit 20, and the recording signal processing circuit through the switching circuit 19. Supplied to (7), and recorded in the information recording area 1b of the magneto-optical disk 1 (see period t1 in the second middle).

Subsequently, of the small-capacity information da such as character information provided in the host apparatus provided through the interface 18, the sector number of the divided data D1 corresponding to the side of the effective sector dd is the physical sector number (01: 00: Four sectors are provided in the sector of 10), supplied to the recording signal processing circuit 7 via the switching circuit 19, and recorded (see period t2 in the second middle).

Thereafter, the rear part additional data d2 corresponding to two sectors in the sector of the physical sector number (01: 00: 14) is provided by the sector data generation circuit 20, and the write signal processing circuit 7 ) Is recorded and supplied (see period t3 in the second middle).

By the above operation, one block of recording is completed, and then blocks of blocks B2 and B3 are successively recorded after the operation of displaying the periods t4 to t9 in the second intermediate period.

In this way, on the upper device side such as a personal computer, only the block number is designated, and on the information recording / reproducing device side, the additional data e can be added to record the small capacity information da, and the recorded blocks are independently in units of blocks. It is possible to rewrite.

Further, in the area management of the small-capacity information da recorded, the host apparatus allocates a predetermined block as the small-capacity information da as the small-capacity information da, and records it via the same operation as above, or the controller 13 and The subcode generation circuit 17 may convert the predetermined format into the predetermined format via the TOC memory 14, and then supply the data to the write signal processing circuit 7 for recording.

Via the latter method, usually, the TOC area 1a is used as the recording area of the area management information.

Next, with reference to the example of FIG. 1 (b), the recording operation when recording large-capacity information db having a relatively large capacity such as still picture information and the like in the second mode of the present invention will be described.

Further, in Fig. 1B, I denotes a block structure, II denotes a sector structure, and as described above, the data dg of one block is composed of eight sectors. Also, III indicates a large amount of information db to be recorded.

First, with respect to the recording instruction provided through the interface 18 by the host device and in the block of the designated block number, the controller 13 performs an operation of converting to the actual physical sector number.

Referring to the example of Figure 1 (b) specifically as follows.

For example, when the host apparatus has a recording instruction in the block of block number B5625, the number of sectors per block is "8", and the physical sector number of the first sector of the block of block number B0 is (01: 00 : 00), the physical sector number of the first sector of the block of the block number B5625 at which recording is started is (01: 00: 00) + block number 5625 x number of sectors (8) = ( 01: 00: 00) + 45000 = (11: 00: 00), and the physical sector number of the block leading sector of block number B5625 can be easily obtained by calculation.

After the necessary access operation is performed on the sector (Fig. 3 (a)) of the physical sector number (11: 00 :) thus obtained, first, the switching circuit 19 is placed on the sector data generation circuit 20 side. In the switching (FIG. 3B), the additional data e supplied from the sector data generation circuit 20 is supplied to the write signal processing circuit 7 as digital data h.

As a result, in the first block having the block number B5625, all additional data d1 (Fig. 3 (d)) is recorded in the first two sectors (see period t1 in Fig. 3).

Subsequently, the switching circuit 19 is switched to the interface 18 side, and the large-capacity information db supplied as the digital data f through the terminal 6 and the interface 18 from the host apparatus is recorded as the digital data h. Supply to the processing circuit 7.

As a result, large-capacity information db (FIG. 3C) such as still picture information is recorded in the remaining sector of the block number B5625 (see period t2 in FIG. 3).

The large-capacity information db is continuously recorded after the block of the next block number B5625 (see period t3 in FIG. 3), and the recording is continued up to, for example, the block of block number 6895 depending on the data length. Period t4 of 3 degrees).

When the recording of the large-capacity information db is completed, the switching circuit 19 is switched to the sector data generation circuit 20 side, for example, the rear part appended data d2 at two sectors at the end of the block of block number B6895. Record (see period t5 in Figure 3).

This via and content information db ends at the sixth sector of the last block, so that the rear part data d2 is recorded in the last two sectors of the last block, but the bulk information da is before the fifth sector of the last block. It is sufficient that the end portion data d2 is recorded after the end of the passage.

Further, by the instruction from the host apparatus, the sub code generation circuit 17 is converted into a predetermined format via the controller 13 and the TOC memory 14 as area management information, and then the write signal processing circuit ( By supplying to 7) and recording, the area management of the large-capacity information db recorded as described above is performed.

This via is used as the TOC area 1a as the recording area of the area management information.

The reproduction of the small capacity information da or the large capacity information db recorded as described above is performed by sending the reproduction command from the host apparatus and the block number of the region to be reproduced to the controller 13 via the interface 18. In the same manner as in the recording, the conversion to the physical sector number is carried out through the necessary access operation.

In the case where the reproduction information is the small-capacity information da, as explained in the example of FIG. 1 (a), the reproduction signal from the optical head 4 is amplified by the reproduction envelope 10 to the reproduction signal processing circuit 15. EFM demodulation is performed on the magneto-optical signal component in the reproduction signal, and further, an error detection correction process using the parallax for error detection correction is performed.

In the error detection and correction operation here, in Fig. 1 (a), the effective sector dd is reproduced by using the all-added data d1 stored in the all-added sector and the additional data e of the rear-added data d2 recorded in the rear-added sector. The process is performed.

Of the signal data of the reproducing agent, only the divided data D1, D2, ..., which are four sectors corresponding to the effective sector dd, are output to the host apparatus via the interface 18 for each block.

In the case where the reproduction information is the large-capacity information db, as illustrated in FIG. 1B, the reproduction signal from the optical head 4 is reproduced by the reproduction envelope 10 to the reproduction signal processing circuit 15. The EFM demodulation is performed on the basis of the magneto-optical signal component in the reproduction signal. After the Era detection correction processing using the para detection correction parity is performed, it is outputted to the host device through the interface 18 and the terminal 6.

Since all the additional data d1 and the rear additional data d2 are added to all of the diesel engine, the large-capacity information db, and the rear part, the detection and correction can also be performed reliably even in the case of the occurrence of an error in both and the end of the large-capacity information db.

As described above, when small-capacity information da having a relatively small capacity is recorded, the first mode is selected and the data is added by adding all the data d1 and the rear part of the data d2 to each block. Since the information can be rewritten, the management of the information becomes easy.

In addition, since the small-capacity information da which ends recording in one or a few blocks via this, even if all the additional data d1 and the rear part data d2 are added to each block, the recording area of the magneto-optical disk 1 is used. The decrease in efficiency is not so problematic, and the data transfer efficiency is also good.

On the other hand, when recording a large-capacity information db having a relatively large capacity, the second mode is selected so that the all-added data d1 and the rear-added data d2 are added to only the first and last blocks, so that the efficiency of the magneto-optical disk 1 is used. And transmission efficiency can be improved. If the data length of the large-capacity information db is constant, if the data length of the large-capacity information db is rewritten at the block position where the previous large-capacity information db was recorded, the address management at the time of rewriting the large-capacity information db becomes easy. It is suitable for large-capacity information db with constant data length.

Even if the information has a relatively large capacity, the data may be recorded in the first mode unless the data length is constant.

In addition, since the recording frequency is low for the purpose of backing up the information recorded on the other recording medium and recorded on the magneto-optical disk 1 by the information recording and reproducing apparatus, the second frequency is high and the utilization efficiency of the recording area is high. It is preferable to record in the mode.

Further, prior to starting recording on the magneto-optical disk 1, an area in which recording is performed in each of the first and second modes, the number of sectors per block, and the like, are provided by the host device to provide the magneto-optical disk 1 with the recording device. It can be registered in a predetermined area.

As described above, instead of individually setting areas for each mode on the magneto-optical disc 1, the first and second modes are assigned with identification codes indicating which mode each piece of information is recorded. May be mixed on the magneto-optical disk 1. In the above embodiment, an example in which one block is composed of eight sectors is shown, but this is a numerical value used for convenience of description, and the block size can be changed to as often as necessary.

The absolute address may be any type of information such as a pit type, as long as the information is prerecorded and recognizable. Further, although the above embodiment has been described using a magneto-optical recording medium, the present invention can be applied to a recordable recording medium that can be written only once as well as other rewritable recording media.

Examples of write-once recording media include TeOX, TeC and organic dye films.

In addition, the shape of the recording medium is not limited to the shape of the disc shown in the above embodiment, and even a recording medium on a tape or a card can be implemented within the scope not departing from the gist of the present invention.

As described above, the information recording and reproducing apparatus according to the present embodiment sets n ₁ all-added sectors to all of the predetermined number n effective sectors and n ₂ rear-added sectors to the rear (n + n _1). + n ₂ ) All-added data in which information to be recorded is divided into n effective sectors in units of blocks composed of sectors, and all-parts of the blocks are recorded in sectors for the information of the effective sectors of each block. And a first block for generating and appending back-side added data to be recorded in the back-side sector and recording the information, and a plurality of blocks each composed of (n + n ₁ + n ₂ ) sectors. The appended data is added to only n ₂ sectors of the information to be recorded in the last block while the appended data is added to only n ₁ sectors of all the information to be recorded in the last block. It is a structure provided with recording means which records information in any mode with the 2nd mode to lock.

Therefore, if the data to be recorded is a relatively small amount of text information or the like, by recording in the first mode, the information can be recorded in one or relatively few blocks, and particularly applicable to a rewritable recording medium. Via diesel, information can be easily rewritten in blocks.

By this, by adding all the additional data and the after-added data to each block, it is possible to detect and correct the reproduction error, and because the data capacity is relatively small, the all-added data and the after-added data are added to each block. The decrease in the utilization efficiency of the rewritable recording medium by adding is not such a problem.

On the other hand, if the data to be recorded is a large amount of data reaching a large number of blocks, the recording is performed in the second mode, and only a predetermined number of all-added data and rear-added data are added to the head and the last block. Since only predetermined information is burned in the block, the utilization efficiency of the recordable recording medium via which large-capacity data is to be recorded can be improved.

No additional data is recorded in the blocks other than the first and last blocks via this block. However, since the association of the Erra Correction is continuously provided by non-complete interleaving between adjacent blocks, the reproduction error is reliably detected and corrected. .

The second mode described above is particularly suitable for data having a relatively large capacity such as still picture data and a constant data length.

In particular, when a rewritable medium is used as a recording medium, (i.e., a large amount of data having a constant data length is recorded in the second mode, when rewriting is performed in a rewritable format in a conventional recording block group such as still image data. In addition, address management at the time of rewriting large-capacity information becomes easy.

In addition, even if the data is relatively large, the data length is not fixed even if the data is recorded in the first mode. Here, an example of an information recording and reproducing apparatus for recording and reproducing external information (discrete information or continuous information) will be described below.

In addition, the same reference numerals are added to members having the same functions as the above embodiments, and detailed description thereof is omitted here. The information recording and reproducing apparatus foreseen here is configured to record in a so-called magnetic field modulation method as shown in FIG. 7, and can also be overwritten (overwriting operation unnecessary) for recording new information overlaid on the recording agent information. It is supposed to be.

The information recording and reproducing apparatus according to the present embodiment uses an input terminal 22 for inputting an analog signal such as music information to be recorded from an external audio device or the like, and an A / D (analog / digital) converter 21 for converting an analog signal into a digital signal. Equipped.

The information recording and reproducing apparatus further includes a D / A (digital / analog) converter 23 and an output terminal 24 for converting a reproduction signal, which is a digital signal, into an analog signal.

This embodiment differs from the above embodiment (see FIG. 4) in that these members are provided.

The information recording and reproducing apparatus receives instructions such as recording / reproducing from an upper apparatus such as a personal computer, or performs data input / output such as text and image information through the terminal 6 with the upper apparatus, and simultaneously records music information to be recorded. The analog signal is inputted through terminal 22 from an external audio device.

For example, when recording continuous information db such as music information, the analog signal inputted at the input terminal 22 is converted into digital data g by the A / D converter 21 and sent to the switching circuit 19.

Then, the switching circuit 19 is supplied to the recording signal processing circuit 7 as digital data h, and the recording processing is performed in the same procedure as in the above embodiment.

On the other hand, when recording discrete information da such as character information, the discrete information da inputted through the terminal 6 from the host apparatus is supplied to the switching circuit 19 as the digital data f via the interface 18, and the The digital data h to which the additional data e has been added is supplied to the recording signal processing circuit 7, and is then recorded and processed in the same procedure as in the above embodiment.

The continuous or discrete information recorded as described above is reproduced by the optical head 4, further amplified by the reproduction end 10, and sent to the pre-record information detection circuit 11 and the reproduction signal processing circuit 15.

Thereafter, the reproduction processing is carried out in the same procedure as in the above embodiment. Via the signal data of the reproduction processing agent is music information or the like, it is output as analog music information or the like to an external audio device or the like through the D / A (digital / analog) converter 23 and the output terminal 24.

Via recording the discrete information such as character information on the magneto-optical disc 1 by the information recording and reproducing apparatus of the present embodiment, the controller 13 as the calculating means is provided via the interface 18 in the host apparatus in the same manner as in the above embodiment. With respect to the recording command of the block number range, a calculation is carried out to which value of the actual physical sector number the predetermined block number range corresponds.

In this way, when the physical sector number of the block number is obtained, an access operation to the block is performed.

And sectors corresponding to the effective color information of the discrete information da from the host apparatus provided via the interface 18 and the additional data e provided by the sector data generation circuit 20 and the additional data d2 provided by the sector data generating circuit 20 for the block. The digital data f, which is divided into numbers, is sequentially switched by the switching circuit 19, and desired information recording is performed (see FIG. 2).

In the switching circuit 19, the digital data g in the A / D converter 21, the discrete digital data f in the interface 18, and the additional data e in the sector generating circuit 20 are input.

When the controller 13 receives an instruction such as recording of music information or recording of computer data through the terminal 6 and the interface 18 from the host device, the controller 13 sends a switching instruction to the switching circuit 19. The switching circuit 19 is configured to select one of the data e, f and g based on this switching instruction and output it as digital data h.

On the other hand, in the continuous information db such as music information, the music information, etc., by the analog signal at the input terminal 22 is transferred to the A / D converter 21 after the necessary access operation is performed on the sector of the physical sector number obtained as described above. After the data is converted to g, it is supplied to the recording signal processing circuit 7 through the switching circuit 19.

Thus, for example, desired music information and the like are continuously recorded after the physical sector number of (11: 00: 00) corresponding to the block leading sector of the block number B5625 (see FIG. 1 (c)).

The end of recording such as music information is performed by providing the controller 13 with an instruction to end the recording through the terminal 6 and the interface 18 in the host apparatus.

In the example of FIG. 1C, recording of music information and the like also ends the block of block number B6895.

Further, for the area management of the continuous information db recorded as described above, the area management information is converted to the predetermined format by the sub code generation circuit 17 via the controller 13 and the TOC memory 14 as the area management information by the instruction from the host apparatus. The recording signal is supplied to the recording signal processing circuit 7 to perform recording.

In this way, the TOC area 1a is used as the recording area of the area management information. The reproduction of the discrete information da or continuous information db recorded as described above is performed by the block number of the region to be reproduced and commanded by the upper unit being sent to the controller 13 through the interface 18. After the sector number conversion, it is executed via the necessary access operation.

In the case where the reproduction information is the discrete information da, as illustrated in FIG. 1A, the reproduction signal in the optical head 4 is amplified by the reproduction end 10, and the reproduction signal processing circuit 15 transmits the photons in the reproduction signal to the signal component. The EFM copying is performed, and further, the erra detection correction processing using the erra detection correction battery is performed.

In the era detection correction operation here, in Fig. 1 (a), the reproduction processing of the effective sector dd is performed using the additional data d1 recorded in the full appended sector and the additional data e written in the rear appended data d2 recorded in the rear appended sector. Is performed.

Only the divided data D1, D2, ... of four sectors corresponding to the effective sector dd in the signal data of the reproduction processing agent are outputted to the host apparatus via the interface 18 for each block.

In the case where the reproduction information is the continuous information db such as music information, as illustrated in FIG. 1C, the reproduction signal at the optical head 4 is reproduced by the reproduction end 10, and the reproduction signal processing circuit 15 transmits the optical signal in the reproduction signal. The EFM demodulation is performed on the magnetic signal components, and further error detection correction processing using an error detection correction parity is performed, and then output to the outside as analog music information or the like through the D / A converter 23 and the output terminal 24.

In this manner, in the information recording and reproducing apparatus using non-complete interleaving, an information recording and reproducing apparatus capable of recording and reproducing continuous information db such as music information and rewritable recording of various discrete information da by block designation can be provided.

Furthermore, when the discrete information da and the continuous information db are mixed and recorded in different formats on the same magneto-optical disk 1, each information is randomly assigned with an identification code indicating whether the discrete information da or the continuous information db is attached. It may be mixed, or may be set separately from the recording area of the discrete information da and the recording area of the continuous information db in advance.

In the above embodiment, one block is composed of eight sectors, but this is a numerical value used for the convenience of explanation, and the block size can be changed in various ways as necessary.

The absolute address may be any type of information such as a pit type as long as it is prerecorded and recognizable information.

Furthermore, although the above embodiment has been described using a magneto-optical recording medium, the present invention can be applied to not only other rewritable recording medium but also to an additional recording medium which can be recorded only once.

Additional recording media include Teox, Tec and organic dye films. The shape of the recording medium is not limited to the shape of the disk shown in the above embodiment, and the recording medium on the tape or card can be implemented within the scope not departing from the gist of the present invention.

The information recording and reproducing apparatus according to the present embodiment has (n + n1 + n2) sectors in which n1 all dummy sectors are added to all of them and n2 rear dummy sectors are added to each of the predetermined number n effective sector groups as described above. Arithmetic means for calculating a physical sector number based on the block number of a block for recording or reproducing the block constituted by the unit; and if the recorded information is discrete information, the solution information is divided into n effective sector units. The dummy information to be recorded in the full dummy sector and the rear dummy information to be recorded in the rear dummy sector are added to the information of each valid sector and recorded in the sector of the physical sector number obtained by the calculation means and recorded. Is a constitution provided with recording means for continuously recording information in the sector of the physical sector number obtained by said calculating means.

Therefore, the host device connected to the information recording and reproducing apparatus itself records the information by simply specifying the block number of the block to be recorded or reproduced without giving an additional sector necessary for recording and reproduction using the non-complete interleaved method. It is possible to cause the playback apparatus to record and reproduce discrete information such as characters and code data. In addition, the host apparatus can instruct recording / reproduction in block units so that it is not necessary to add and transmit data related to additional sectors and can easily perform information management.

Particularly, via the application to a rewritable recording medium, a partial rewriting of data recorded in the past is performed by the host apparatus instructed in block units.

Further, according to the information recording and reproducing apparatus, since continuous information such as music information using an incomplete interleaved method can be mixed and recorded on the same recording medium as the discrete information, recording various kinds of information on one type of recording medium. Since various kinds of information can be recorded on one type of rewritable recording medium while reproduction is performed, it is not necessary to use another recording medium for each recording information, and it can contribute to the low cost of the recording medium.

Here, an example in which the information recording and reproducing apparatus of the present invention is incorporated into and used in an electronic still camera capable of recording sound information will be described below.

However, the same reference numerals are added to members having the same functions as the above embodiments, and detailed description thereof is omitted here.

The information recording and reproducing apparatus foreseen here is also configured to record in a so-called magnetic field modulation system, and overwriting of recording new information on the recording agent information can be performed.

When recording image information, the information recording and reproducing apparatus is provided with an input terminal 6a and a microphone (not shown in the figure) for inputting image information from an image pickup device (not shown) as shown in FIG. Input terminals 6b for inputting audio information, output terminals 6c and 6d, respectively, for outputting audio information, and higher levels for controlling each part of the electronic still camera such as the image recording and reproducing apparatus and the image pickup device and microphone. The terminal 6e for inputting and outputting the control signal between the controllers is provided. Via the recording of the image (still image) information, the image information input to the interface 18 at the input terminal 6a is sent to the switching circuit 19 as the digital data f.

In the switching circuit 19, the digital data f at the interface 18 and the additional data e (described later) at the sector data generation circuit 20 are switched so that the digital data h having the additional data e added to the digital data f is supplied to the recording signal processing circuit 7. .

On the other hand, when recording the voice information, the voice information input at the input terminal 6a is supplied to the switching circuit 19 as the digital data f via the interface 18, so that the additional data e in the via sector data generation circuit 20 is not added, but the digital data. f is supplied as it is to the recording signal processing circuit 7 as digital data h, and recording processing is performed in the same manner as described above. The image or sound image information reproduced by the optical head 4 is amplified by the reproduction end 10 and sent to the pre-record information detection circuit 11 and the reproduction signal processing circuit 15, and the reproduction processing is performed in the following procedures.

Image or audio information of the reproduction processing agent is then output to the display and audio output unit (which is not shown in the figure) such as a television via the interface 18 and the output terminals 6c or 6d.

Furthermore, the controller 13 for recording and reproduction is instructed to record or reproduce through the terminal 6e and the interface 18 in the upper controller.

By the way, the information recording area 1b of the magneto-optical disc 1 used in the present embodiment records information in block units, for example, by forming one block every eight sectors as shown in FIG. The reproduction is performed, and block numbers such as B0, B1, ..., etc. are assigned to each block so as to increase gradually from the inner circumferential side of the magneto-optical disc 1 (see Fig. 12).

In this embodiment, image information recording areas 11, 12, ... (shown by hatching in FIG. 8 for convenience) for recording image information having a constant data capacity are sequentially arranged on the outer circumferential side, i.e., the large block number, in the information recording 1b. On the other hand, the voice information recording areas A1, A2, ..., which record voice information of variable data capacity, are sequentially arranged on the inner circumferential side, that is, the side with the small block number, in the information recording area 1b.

Further, in each image information recording area 11, 12, ..., image information is sequentially recorded in blocks having a small block number.

The blank area in which neither the image information nor the audio information is recorded by the above-described information arrangement is generated at one place between the image information recording areas 11, 12, ... and the audio information recording areas A1, A2, ... As a result, the utilization efficiency of the information recording area 1b can be increased. When it is desired to rewrite the recorded audio information, audio information regarding all images of the recording agent may be collectively rewritten as shown in FIG. 8 (b).

Here, A1 ', A2', ... denote each audio information recording area after rewriting.

Further, when the voice information is no longer needed, the group of continuously recorded voice information can be easily erased collectively, and the continuous blank area generated by erasing can be used for recording the image information.

Next, with reference to FIG. 9, the address control via storing the image information in the optical recorder disc 1 by the information recording and reproducing apparatus will be described. In Fig. 1, block structure II of the information recording area 1b indicates a sector structure of each block.

Blocks B22500, B22501, ... B22563 ... are assigned to each block as shown in Figure 1, and each minute in each block as shown in Figure II is "minute": "second": A physical sector number which is a combination of " sector number within 1 second (which is one of 00 to 74 because 75 sectors are included within 1 second in this embodiment) " is assigned.

The data dg of each block is composed of eight sectors, and the block located on the innermost side of the information recording area 1b is assigned a block number B0 (FIG. 12). A sector number (01: 00: 00) is provided.

Regarding the recording of the image signal, the recording / reproducing controller 13 writes to the recording block of the predetermined block number range provided from the upper controller to the recording / reproducing controller 13 via the interface 18. It calculates which value corresponds to the physical sector number of.

It will be described using the specific example of FIG.

For example, the number of sectors per block is " 8 " via a block designated by the block numbers B22500 to B22563 as the image information recording area 11 for recording the image information da1 of the image one by one. Similarly, since the head physical sector number of the block of the block number B0 is determined to be provided as (01: 00: 00), the physical sector number of the block leading head of the block number 22500 to start recording is (01: 00: 00) + block. The number 22500 x the number of sectors 8 = (41: 00: 00) makes it possible to easily obtain the physical sector number at the head of the block number B22500.

In this way, when the block physical sector number of the block number B22500 is obtained, an axing operation is performed on the block.

Incidentally, in this embodiment, one block is composed of eight sectors, but among these eight sectors, only four sectors in the center constituting the effective sector dd actually record image information da1, and the first two sectors and the last two sectors in each block are recorded. In the sectors, the entire portion of the data d1 and the rear portion of the data d2 are recorded.

The all-added data d1 and the rear-added data d2 are used for correcting correction by detecting a reproduction error in the data recorded in the effective sector dd when recording / reproducing is performed using the incomplete interleaved by the CIRC. It is a dummy containing parity.

By adding all data d1 and rear data d2 to each block, even if information is rewritten in units of blocks, the data of the effective sector dd of each block can be accurately reproduced.

After calculating the physical sector number of the first sector of the block number B22500 (see FIG. 10 (a)) and accessing it as described above, all parts provided by the sector data generation circuit 20 after the sector of this physical sector number are added. The first image information da1 provided through the data d1 (equivalent figure (b)), the additional data e (equivalent figure (b)) which becomes the rear part additional data d2, and the interface 18 is divided into four sectors corresponding to the effective sector dd. The digital data f serving as the first divided data D1 (dong (c)) is sequentially switched by the switching circuit 19, and desired information recording is performed.

Referring to the block diagram of the block B22500, first of all, the additional data d1 to be recorded in two sectors in the sector having the physical sector number (41: 00: 00) is provided by the sector data generation circuit 20, and is switched through the switching circuit 19. It is supplied to the recording signal processing circuit 7 and stored in the area 1b by the information device of the magneto-optical disk 1 (see period t1 in FIG. 10).

Subsequently, four sectors are allocated from the sector (41: 00: 02) as the recording sector group of the first divided data D1 corresponding to the size of the effective sector dd in the image information da1 provided through the interface 18. It is supplied to and written to the recording signal processing circuit 7 through the circuit 19 (see period t2 in FIG. 10).

Thereafter, the rear part data d2 corresponding to two sectors in the sector (41: 00: 06) is provided by the sector data generation circuit 20, supplied to the recording signal processing circuit 7 through the switching circuit 19, and recorded (the One block of recording is completed by the operation of the period t3 in Fig. 10) or more, and subsequently, the blocks of blocks B22501 to B22563 are successively recorded via the operation indicated by t9.

Subsequently, when the second image information da2 is recorded, the block range of the image information recording area 12 is set at the same time that the end block becomes one block in front of one hand from the start block of the image information recording area 11 of the first image. The number is set to be equal to that of the image information recording area 11, whereby the calculation of the physical sector number is performed.

The block range is set so that the number of blocks per image becomes constant for the image information recording areas 13, 14, ... of the third and subsequent images, and that the block number of the block group to be recorded is gradually reduced, and accordingly, the physical sector The number is calculated.

Further, for the area management of the recorded image information da1, the upper controller may allocate a predetermined block to the area management information itself and record it via the above operation, or the controller 13 and the Toc memory 14 may be recorded. The sub code generation circuit 17 may convert the data into a predetermined format via the sub code generation circuit 17, and then supply the data to the recording signal processing circuit 7 for recording. Via the latter method, the Toc area 1a is used as a recording area of normal area management information.

By the way, as shown in FIG. 9 at the time of recording the image information da1, d2, ..., each block as shown in FIG. 11 instead of adding all the data d1 and rear part adding the data d2 to each block. All the additional data d1 is added only to the first block in the block group in which the image information da1, d2, ... is recorded, and the rear part additional data d2 is added only to the last block, and the remaining information includes the image information da1, da2, ... May be recorded continuously.

Via this, for example, recording of the first image information da1 ends with a block B22532, whereby the utilization efficiency of the information recording area 1b can be increased.

The following describes the recording operation of the voice information with reference to FIG.

Further, in the twelfth, 1 denotes a block structure, II denotes a sector structure, and as described above, one block of data dg is composed of eight sectors. III indicates audio information to be recorded.

First, the recording / reproducing controller 13 converts the actual physical sector number to the recording / reproducing in a block of a predetermined block number provided to the recording / reproducing controller 13 via the interface 18 by the upper controller. To do the operation.

Referring to the example of Figure 12 specifically described as follows.

For example, in the audio information recording area in which audio information db1 corresponding to the first image is recorded, A1 (see FIG. 8 (a)) is started from the block B0 having the smallest block number in the information recording area 1b. .

Since the physical sector number of the block leading sector of the block number B0 is given as (01: 00: 00), the recording / playback controller 13 performs an access operation on the sector of the physical sector number.

Thereafter, the voice information db1 input through the interface 18 at the input terminal 6a is supplied to the recording signal processing circuit 7 as the digital data h through the switching circuit 19, so that the voice information after the physical sector number of (01: 00: 00) db1 is written continuously.

That is, at the time of recording the audio information db1, all eight sectors of one block become the corresponding sectors, and all the added data and the rear added data are not added. The recording end of the audio information db1 is performed by providing an instruction of recording end to the recording / reproducing controller 13 via the interface 18 in the upper controller.

In the example of FIG. 12, the recording of the voice information db1 ends with the block of the block number B74.

Through this, the audio information recording area A2 for recording the second picture audio information db2 starts from the block of the following block number B75, and when recording to the audio information recording area A2, the physical sector of the sector at the beginning of the block at the block number B75. The number is calculated in the same manner as above.

Further, the physical sector numbers of the first sectors of the audio information recording areas A3, A4, ... for the third and subsequent images are also calculated in the same manner. Area management of the recorded audio information db1, db2, ... is performed by a command from the upper controller and as a predetermined format by the subcode generation circuit 17 via the controller 13 and the toc memory 14 as area management information. After the conversion, it is supplied to the recording signal processing circuit 7 and recorded.

This via uses the Toc area 1a as a recording area of the area management information. In the reproduction of the recorded image information da1, da2, ... or the audio information db1, db2, ... as described above, the playback command from the upper controller and the block number of the region to be reproduced are recorded through the interface 18. By sending to the reproduction controller 13, the same physical sector number is converted and then performed by a necessary access operation.

In the case of reproducing the image information da1, da2, ..., as illustrated in FIG. 9, the reproduction signal of the optical head 4 is amplified by the reproduction end 10, and the reproduction signal processing circuit 15 is applied to the optical magnetic signal component of the reproduction signal. The EFM assistance is performed, and further, the erra detection and correction processing using the erra detection and parity is performed.

In the error detection and correction operation here, in Fig. 9, the effective sector dd is reproduced by using the all-added data d1 recorded in the all-added sector and the rear-added data e recorded in the rear-part sector. And the effective sector dd in the signal data of the reproducing agent. Only divided data D1, D2, ... of four sectors corresponding to the effective sector dd in the signal data, which is a reproduction processing agent, is outputted through the interface 18 and the output terminal 6c for each block.

In the case of the way of reproducing the voice information db1, db2, ..., the case of the case of the example in FIG. 12 will be described. The EFM demodulation is performed on the signal components, and further, an error detection correction process using an error detection correction parity is performed, and then outputted through the interface 18 and the output terminal 6d.

Further, in the above embodiment, the image information in the electronic still camera is described as audio information in the electronic still camera of the variable capacity as the constant capacity information. The present invention is effective in the case of mixing and recording. In the above embodiment, one block is composed of eight sectors, but this is a numerical value used for convenience of explanation, and the block size can be variously changed as necessary. The absolute address (physical sector number) may be any type of information such as a pit type as long as it is information recorded and recognizable.

Further, although the above embodiment has been described using a magneto-optical recording medium, the present invention is also applicable to other rewritable recording media, and is not limited to the type of disk, but may be a tape or card recording medium according to the present invention. It can be implemented within the range which does not deviate from the extraction.

Here, another embodiment of the information recording and reproducing apparatus of the present invention will be described in detail below.

In addition, the same reference numerals are added to members having the same functions as the above embodiments, and detailed description thereof is omitted.

As shown in FIG. 13, the magneto-optical disk 1 according to the present embodiment is divided into three regions T1 to T3 (units) in a ring in the disk shape of FIGS.

In the present embodiment, the area T1 is the CD format, the area T1 of the track number is the CD format, the area T2 of the track number corresponds to the number 3 of the track number, and each area is the CD format. As shown in the first table, No. 1 of the track number occupies (09: 22: 74) to (09: 22: 74) of the physical sector number and No. 2 of the track number is (09: 24: 00) to (29: 23: 74) and track number 3 occupies (29: 25: 00) to (57: 27: 74) of the physical sector number.

Here, the physical sector number is expressed as continuous time information that is sequentially increasing in the innermost circumference of the magneto-optical disk 1, namely (minutes: seconds: information of frames). Further, since the sector length is 13.3 ms, it is 1 sector of 75 sectors, so the frame is represented by 75 decimal.

TABLE 1

In each track, the block size is assigned to eight sectors of track number 1, 12 sectors of track number 12, and 16 sectors of track number 3, respectively. The format information is recorded in the Toc area 1a (unit information recording area) in FIG. 13, and the content of the Toc area 1a can determine the arrangement of the information area on the disc and the block size of each area.

14 is a schematic diagram showing the relationship between the physical sector number, the block number, and the track number in the present embodiment, in which No. 1 of the track number corresponds to the physical sector number (01: 23: 00) on the disc (09: 22: 74). It shows that it supports. In the area T1 of the track number 1, the number of sectors per block is 8, so 0 in the block number is (01: 23: 00) to (01: 23: 07), and 1 in the block number is (01: 23: 08). (01:23:15). In addition, since the first area T1 of the track number has a size of (08: 00: 00) from (01: 23:00) to (09: 22: 74), the number of sectors in this track is 8x60x70 = 36000 sectors and the number of blocks is 36000/8 = 4500 blocks.

Therefore, block numbers 0 to 4499 are assigned to this track. Similarly, the track number 2 corresponds to (09:24:00) to (29:23:24) of the physical sector on the disc.

Since the number of sectors per block is 12 in the area T2 of the track number, 0 in the block number corresponds to (09:24:00) to (09:24:11). In the second area T2 of the track number, the number of sectors is 20x60x5 = 90000 sectors, and the number of blocks is 90000/12 = 7500 blocks.

Therefore, in this track, block numbers 0 to 7499 are assigned.

Further, the track number 3 indicates that (29: 25: 00) to (57: 24: 74) of the physical sectors on the disc.

In the third area T1 of the track number, the number per block is 16, so the number 0 of the block number corresponds to (29:25:00) to (29:25:15). In the track number area T3, the number of sectors is 28x60x75 = 126000 sectors, and the number of blocks is 126000/16 = 7875 blocks.

Therefore, block numbers 0 to 7874 are assigned to this track. In addition, XX in the figure is a border area of track numbers, and block numbers are not provided in the blocks corresponding to them.

According to these information area arrangements, a block having a capacity of 8 sectors in track number 1, a block having a capacity of 12 sectors in track number 2, and a capacity of 16 sectors in track number 3 are provided. By specifying each block signal as a block, recording and reproduction of the corresponding data capacity unit can be performed, and storage at a block size suitable for various types of information including file management information can be performed on one disc.

For example, since character information and the like have a relatively small amount of information because of code data, it is more efficient to record and reproduce information using the area T2 corresponding to track number 2.

On the other hand, since the amount of information expands in image information and the like, it is more efficient to record and reproduce information using the area T3 corresponding to track number 3 in the arrangement.

Since the file management information such as the directory of the various files No. 2 and No. 3 of the track number is usually a small amount of information, in the above arrangement example, recording and reproduction of the file management information is performed using the area Ti corresponding to No. 1 of the track number. It is more efficient.

The file management information of the track number 1 area T1 is updated whenever a file is newly created, data is added, updated, deleted, or read in the areas T2 and T3 track number 2 or 3. .

Of course, the above block size is a numerical value used for convenience of description and can be actually various suitable sizes. Specific file management information includes a directory and a file allocation table (FAT).

For example, MS-DOS (Microsoft's Disk Operating System) has a directory as described on page 35 of the book "Application MS-DOS," published by Asagi, Japan, on July 31, 1986. In the file name, file type (comment, data, etc.) file attributes, file update date, file size file head class number, etc. are recorded for each file, and the raster number used for each file is sequentially recorded in the FAT. .

In the present embodiment, for example, in MS-DOS, the track number and the block number are recorded instead of the head cracker number of the file. In the FAT, for example, the block number is sequentially recorded instead of the raster number.

Further, in the present embodiment, the positional information and the block size information of each information area have been described as an example in which the Toc area 1a (Fig. 13) is arranged, but not limited to this, and there is no particular limitation as long as it is a predetermined area. The form is not a problem as long as the form of the absolute address is previously recorded and recognizable information.

In the magneto-optical disk device of this embodiment, as shown in FIG. 15, the controller 13 as a processing unit performs the following operations by instructions from the host device.

That is, in the initial state (unrecorded state) of the disk of this embodiment, the arrangement information on the recording medium of the unit, which is a set of blocks provided by the host 18 via the interface 18, the sector number information per block, and the unit number information for identifying each unit Is transferred to Toc memory 14 as a unit = track.

This corresponds to, for example, the contents of the first table. The contents of the Toc memory 14 include the subcode generation circuit 17 and the recording signal processing circuit 7 immediately after the access operation is performed by suppressing the optical head and the coil moving mechanism not shown in the drawing at the disc position corresponding to the Toc region 1a of the disc 1. A predetermined process is performed on the module and then recorded by driving the coil 5 through the coil driver 8.

In addition, this operation may be performed immediately before ejecting the disc 1 from the apparatus without performing information transfer from the host apparatus. In addition, the recording of information about the unit is performed even when the unit is added or changed from the beginning by the information transfer from the host apparatus.

In the above embodiment, the example of recording in the Toc area 1a including unit number information for identifying each unit has been described. However, the unit is determined if the arrangement of information about each unit in the Toc area 1a corresponds to the absolute address. The number information may be omitted.

As described above, when the disc 1 in which the area information for each track number and the number of sectors per block are recorded in the TOC area 1a is loaded into the present recording / reproducing apparatus, the contents of the TOC area 1a are first read.

Further, the load in the present specification means a state of being loaded in the present recording and reproducing apparatus in the initial state or being turned on again when the power is turned off as it is.

Specifically, the controller 13 controls the moving mechanisms of the optical head and the coil not shown in the drawing, moves the optical head 4 to the disk position corresponding to the TOC region 1a, and performs the regeneration operation. The information in the TOC area 1a is delivered to the reproduction signal processing circuit 15 through the reproduction end 10 in the optical head 4, and the actual TOC information is supplied to the controller 13 through the sub code detection circuit 16 in the reproduction signal processing circuit 15. This TOC information can be stored in the TOC memory 14 as information for calculation during the subsequent recording / reproducing operation and sent to the host apparatus via the interface 18.

In the subsequent information recording and reproducing operation, the controller 13 uses the contents of the TOC memory 14 to perform the actual physical sector address operation for the unit number designated through the interface 18 and the designated block in the unit.

A concrete description is made using the example of FIG. 14 as follows.

For example, the file management information recorded in the track number 1 is read first by the host device when a command is made to newly record data with a predetermined file name on the unit number 2 above the unit number. The block number is examined. If the unused block number is 1, the track number 2 area is set according to TOC memory 14 (09: 24: 00) and the number of sectors per block is 12 (09: 24: 00). The block number (1) x number of sectors 12 = (09:24:12) is obtained, and the head physical sector address of which the block number is 1 can be easily obtained.

After the necessary access operation or the like is performed for the physical sector number thus obtained, recording information transmission is performed through interface 18, and desired information recording is performed.

Of course, at this time, management information such as the file name of the file is added to the unused block of the directory recording area whose track number is 1, and management information of the used block of the file is added to the unused block of the FAT recording area.

By the way, if the host device has a recording instruction from the unit number 1 and the block number 1 from the host device, the track number is set according to TOC memory 14 (01: 23: 00) in the first area, and the sectors per block. The number is 8 (01: 23: 00) + block number (1) x number of sectors 8 = (01: 23: 08), and the leading physical sector address of block number 1 can be easily obtained. After the necessary access operation or the like is performed for the obtained unfavorable sector number, recording information transmission is performed through interface 18, and desired information recording is performed.

Further, in the above-described examples, the example of recording and reproducing information on each unit (information such as the block size of each unit) in the TOC area 1a of the disc 1 has been described, but not limited to this. .

In addition, information on provisional units may be recorded and reproduced in the main data area instead of the sub code area.

Via this, the controller 13 is connected to the recording signal processing circuit 7 and the reproduction signal processing circuit 15, as indicated by the tangential line in Fig. 15, to record and reproduce the information about each unit.

As described above, by setting a plurality of areas on the disk composed of blocks having information capacities suitable for various types of information including file management information and centrally managing the file management information of the propagation date into one area, each recording and reproduction can be performed. It can be performed easily and efficiently.

In the above embodiment, the recording medium on the disk by the magneto-optical method has been described. However, the recording medium can be applied to other rewritable recording media. The shape of the recording medium is not limited to the disk type but may be recorded on a tape card or the like. It executes functions within the scope not departing from the gist of the present invention.

The information recording and reproducing apparatus according to the present embodiment arranges a plurality of uni, which is a concatenation of blocks as described above, records the arrangement information of each unit and the sector number information per block of each unit in a predetermined unit information recording area of the recording medium and simultaneously stores the file. A unit for recording file management information is provided separately from a unit for recording a file, and a processing unit for file management is provided, whereby a block having a different number of sectors of one recording medium can be arranged.

This makes it possible to allocate a block having an optimum number of sectors according to the data length of various kinds of information, and to efficiently use the recording area of the recording medium without too much waste.

In addition, a unit for recording file management information of all units is installed, so that it is possible to allocate blocks of sector numbers for recording file management information, and to improve not only the utilization rate of the recording medium but also the average recording / playback speed of data. You can do it. When only the unit on which the file management information is recorded is exchanged when the recording medium is replaced, the recording status of the files of all units can be quickly grasped.

Further, instead of recording and reproducing the information using the area information T2 corresponding to the track number 2, the character information and the like can be efficiently recorded and reproduced even when the area T1 corresponding to the track number 11 is used. There is a number.

At this time, since the amount of information expands in the image information and the like, it is sufficient to record and reproduce the information using the area T3 corresponding to No. 3 of the track number. Of course, the block size is a numerical value used for convenience of explanation, and can be actually used as a suitable size.

Of course, the block size example is the number used for the convenience of description, and can be made into the actual suitable size.

FIG. 16 is a time chart for the case where the recording and reproducing check operation in units of blocks are repeatedly performed using the disc of the embodiment. However, it is assumed that the disc used here is recorded with absolute address information of the pre-record information in the CLV (Constant Linear Velocity) method, and the following recording / reproducing operation is also performed by the CLV control using the pre-recorded absolute address information. I am doing it.

The areas T1, T2, and T3 are set so that the block size approaches each sector of the disc per revolution (which is smaller than the number of sectors per revolution) in each of the regions.

In Fig. 16, the horizontal axis indicates the passage of time, and the same figures (a) and (b) indicate the recording on the disc inner peripheral side and the disc outer peripheral side of the area T1 (i.e., track number 1) in Fig. 13. In FIG. 13, the recording operation charts, the temperatures c and d are recorded at the disc inner circumferential side and the disc outer circumferential side of the area T2 (i.e., the track number 2), and the reproduction shank operation chart and the same degree (Fig. e) and (f) show the recording and reproduction check operation charts at the disc inner circumferential side end and the disc outer circumferential side end of the area T3 (that is, track number 3) in FIG.

In addition, Wo indicates the recording operation of the block number 0, and Ro indicates the regeneration check operation after the block number 0 recording operation.

Hereinafter, the subscripts of W or R indicate a block number, and the recording and playback check operations are indicated at respective disc positions as described above. Therefore, the time from the start of the recording operation to the start of the reproduction check operation is equal to the time per disc rotation in each information position, and the time except for the recording operation is the disc rotation waiting time when moving from the recording operation to the reproduction check operation.

As apparent from Fig. 16, in the present embodiment, since the block size increases toward the outer peripheral side of the disk, it is understood that the disk rotation waiting time does not increase so much also on the outer disk side. Therefore, in the CLV disc, efficient recording / playback operation in block units is possible regardless of the disc radius position.

Further, in the above embodiment, the positional information, the block size information, and the like of each information area have been described as an example in which the TOC area 1a (Fig. 13) is arranged.

In the above embodiment, for convenience of description, it is divided into three areas (units) of T1, T2, and T3, and each block size (number of sectors per block) is composed of 8, 12, and 16, respectively, but is not limited thereto. Depending on the block size, the number of blocks (unit number) and the number of blocks in the area (unit) can be changed in various ways.

Further, the number of sectors indicated by 8, 12, and 16, respectively, is set to approach the number of sectors per one revolution of the disc in order to improve the average recording / reproducing speed of the data.

In other words, a playback check must be performed immediately after the end of recording via a rewritable disc-shaped recording medium (e.g., magneto-optical disc), and the average recording / playback speed is affected by the block size setting method. Receive. For example, if the linear velocity of the disk controlled by CLV is 1.2 m / s, the number of slack sectors in the innermost circumferences of the areas T1, T2 and T3 is 10.2, 12.2 and 16.2, respectively.

If the block height is set to a value (positive integer value) close to the number of these sectors, the rotation waiting time until the verification is performed (the time until the start of the playback link by performing track gem after completion of recording of one block) is obtained. As a result, the average recording and playback speed is significantly improved.

Further, even if the number of sectors of the block size of the area T1 is set to 20 (<10.2 × 2) or 30 (<10.2 × 3), the average recording / reproducing speed at the same level as that described above can be obtained.

In addition, even if the sector number block size corresponding to the disk N rotation field is generally set or the number of areas (units) is subdivided, the average recording / reproducing speed of data can be improved in the same manner as described above. That is, if the number of sectors per one revolution of the innermost circumference of each unity is m (number of sectors / revolution) and the frequency of the disk occupied by one block in the innermost circumference of each unit is n (positive integer), the block size Be Is set to satisfy the following expression, the average recording and reproducing speed of data is remarkably improved.

((m × n) -0.5m) 〈Bs 〈(m × n)

In addition, the form of the absolute address does not matter if the information is pre-recorded and printable.

In this way, a plurality of areas on the disk made up of blocks having information capacities suitable for various types of information can be set, and respective recording and reproducing can be performed easily and efficiently.

Further, although the above embodiment has been described using the recording medium on the disc by the magneto-optical method, the present invention can be applied not only to other rewritable recording medium but also to a recordable recording medium which can be recorded only once. Write-once recording media include, for example, TeOx, TeC or organic dye films. The shape of the recording medium is not limited to a disk, but may be a recording medium such as a tape card or the like, and may be implemented without departing from the spirit of the present invention.

In particular, when the present invention is applied to a rewritable type as a recording medium, the unit can be erased on a unit basis (for example, in a different format), and the area of each unit can be easily changed (expand / reduce the unit area or block size). In this case, one recording medium can be used efficiently. For example, the capacity of the area T1 can be enlarged by eliminating the information of the area T2 and deleting only the information of the transit area T2 where the capacity of the area T1 is insufficient and recording the same format information as the area T1 in the area T2. There is a number.

After the information has already been stored in an arbitrary block size in a plurality of areas, the following information is changed (repositioning the information) by changing the setting so that the block size of each area becomes larger as it goes from the inner circumferential side to the outer circumferential axis. The average speed required for recording and reproducing at the time of rewriting can be improved.

In the recording medium according to the present embodiment, as described above, a plurality of units which are sets of blocks are arranged, and a unit information recording area is provided in which the arrangement information on the recording medium of each unit and the sector number information per block of each unit are provided. It is possible to arrange blocks with different numbers of sectors in the medium.

This makes it possible to allocate a block which becomes the optimum number of sectors according to the data length of various kinds of information, and to efficiently use the recording area of the recording medium without making such a waste. Therefore, the average recording and reproducing speed of data can be improved.

In the recording medium of the present invention, if the absolute address information is recorded in advance, it can correspond to the information of various data lengths. Therefore, the recording medium to be prepared becomes one type, so that the recording medium can be shared and the price can be reduced. .

Further, the information recording and reproducing apparatus according to the present embodiment stores the arrangement information on the recording medium of the unit, which is a set of blocks provided by the host apparatus, and the sector number information per block of each unit in the predetermined unit information recording area on the recording medium as described above. This apparatus is provided with a processing section that reads these information upon recording and loads the recording medium, and calculates the physical sector number corresponding to the block in the unit designated by the host apparatus on the basis of the read-out information when recording and reproducing. The arrangement information of each unit and the information on the number of sectors per block can be recorded in the predetermined unit information recording area of the recording medium.

This makes it possible for the host apparatus to allocate a block which becomes the optimum number of sectors according to the data length of each of various kinds of information, and can efficiently use the recording area of the recording medium without too much waste. As a special recording medium, when the linear velocity is applied to a disc (rewritable type) on which recording and reproducing is performed, a regeneration check (verify) must be performed after recording. By setting the number of sectors slightly smaller than the number of sectors corresponding to the positive integer), the waiting time until the verification can be shortened, and the average recording / reproducing speed of the data can be remarkably improved.

In addition, the host apparatus can record and reproduce by simply specifying a unit and a block for the apparatus.

Further, via the application to a rewritable recording medium, in particular, the recording medium can be erased in units of units so that the erased unit can be set as a unit having a different block size or the area of each unit can be easily enlarged / reduced.

Therefore, it is possible to provide a recording / playback apparatus capable of efficiently using one recording medium. For example, according to the present invention, it is possible to allocate units to information having different formats to store their information on one recording medium, but it is easy to erase only the unit in which unnecessary information is recorded. Can be.

Therefore, this erased unit can be used as a unit for recording information having the same format as any of the above, or it can be set as a brand new unit having a block size different from the above and used for recording information having another format. Can be assigned.

One specific embodiment, or example, in the description of the invention is intended to clarify the technical contents of the present invention to the extent that it should not be construed as being limited to such specific embodiments only, and the spirit of the present invention and the following Various modifications can be made within the scope of the claims.

Claims (13)

A physical sector number for identifying each sector as a recording area is provided by the absolute address information recorded in advance, and the recording and reproducing of information is performed by using a record medium that can simultaneously record and reproduce information in blocks of a predetermined number of sectors. An information recording and reproducing apparatus for recording and reproducing information includes: recording means for recording information on the recording medium, arrangement information on a recording medium of a unit which is a set of blocks provided by a higher level device, and information on the number of sectors per block of each unit. Is recorded in the unit information recording area on the recording medium by the recording means, and when the recording medium is loaded, the information recorded in the unit information recording area is read and corresponding to the block in the unit designated by the host device during recording and reproducing. A processor including a processing unit for calculating a physical sector and making the recording means accessible to the seafood sector Recording and reproducing apparatus. 2. The recording medium according to claim 1, wherein the recording medium has a plurality of units arranged as a set of blocks arranged on the recording medium, and the blocks can be set so that the number of sectors is different, and according to the respective data lengths of various kinds of information. An information recording and reproducing apparatus capable of allocating a block having an optimal number of sectors. 3. The recording medium according to claim 2, wherein the recording medium has a disk shape, and the unit is m as the number of sectors per one revolution of the innermost circumference of each unit, and the circumference of the disk occupied by one block in the innermost circumference of each unit. If n is set, the block size Bs is set to satisfy ((m × 0) -0.5) &lt; Bs &lt; (m × n). An information recording and reproducing apparatus, wherein the time to be made is substantially constant regardless of the radial position of the recording medium. A physical sector number for identifying each sector as a recording area is provided by the absolute address information recorded in advance, and information recording and reproducing is carried out using a record medium that is a minimum number of blocks that constitute a predetermined number of sectors, An information recording and reproducing apparatus for recording and reproducing information includes: a storage means, processing means for causing the storage means to store arrangement information on a recording medium of a unit that aggregates the block, and information on the number of sectors per block of each unit; Means for generating subcode information due to the sector number specification on the number of main information and the recording start position thereof based on the output of the means, and the information to be recorded from the host apparatus, the parity for error detection correction and the subcode information. Recording signal processing means for outputting an equation with an additional frame synchronization signal after the BFM modulation; The information recording and reproducing apparatus which comprises a recording means for recording information on a recording medium based on the output of the stage. 5. The reproduction signal processing means according to claim 4, further comprising: a reproduction signal processing means for outputting signal data of a reproduction processing agent obtained by EFM demodulation of the reproduction signal and performing an error detection correction process using an erra detection correction parity; And sub-code detecting means for detecting sub-code information, wherein said processing means selects the output of the sub-code detecting means for the storage means to store / read or to store / read information on the TOC contents in the host apparatus. An information recording and reproducing apparatus that is to be read. The information recording and reproducing apparatus according to claim 1, further comprising means for file management by providing a unit for recording file management information separately from a unit for storing a file. 7. The information recording and reproducing apparatus according to claim 6, wherein the file management information is a directory and a FAT, and the directory includes a track number and a block number, and the block number is sequentially recorded in the FAT. An information recording and reproducing apparatus for recording and reproducing information by using an incomplete interleaving method on a recordable recording medium provided with a physical sector number of a recording area by a pre-recorded address, is provided for every n effective sector groups. The physical sector number is determined based on the block number of a block for recording or reproducing in units of blocks composed of (n + n1 + n2) sectors in which n2 rear part sectors are added to the rear of n1 part sectors. Computation means for calculating, and when the information to be recorded is discrete information, the solution information is divided into the n effective sector units, and the all-added data and the rear-part are recorded in the all-added sector for each valid sector information. The rear part adds and generates data and records the data in the sector of the physical sector number calculated by the calculating means. And recording control means for continuously recording information in the sector of the physical sector number calculated by the calculating means. An information recording and reproducing apparatus for recording and reproducing information by using an incomplete interleaving method in a recordable recording medium provided with a physical sector number of a recording area by a pre-recorded address, all of the n effective sector groups. Physical sector number based on the block number of a block for recording or reproducing in units of blocks constituted by (n + n1 + n2) sectors with n1 all-added sectors and n2 rear-added sectors at the rear Arithmetic means for calculating the data, and all the additional data and the rear-added sector, which record all the information in the effective sector of each block via the small-capacity information or the information in which the data length is not constant, for each block. N1 pieces of the first block via the rear part additional data to be recorded in the data generated, added, and recorded, and a large amount of information is recorded over a plurality of blocks. A record in which a married couple adds all the added data only to a sector, and at the same time, adds the rear part added to the n2 rear part of the last block and continuously records the information in a sector between the sector and the rear part. An information recording and reproducing apparatus including control means. 10. The apparatus according to claim 9, further comprising: switching circuit means and sector data generating circuit means for generating the additional data, wherein additional data is added to information to be recorded by the recording control means switching the switching circuit means. Information recording and reproducing apparatus. A method of recording a large amount of information over a plurality of blocks includes the steps of specifying the head sector number of the block based on the designated block number, accessing the specified head sector number, recording all additional data, and then And a step of recording the information successively in sectors, and recording data in the rear part after finishing recording the information in the last block. In the method for recording a small amount of information in each block, the step of specifying a designated block number and the specified head sector number are accessed, and after all data is recorded, the head sector of the block is based on the data to be recorded. An information recording and reproducing apparatus comprising the steps of recording the information into a subsequent sector, and a step of recording data after the information is recorded. 2. The recordable recording medium according to claim 1, wherein the recordable recording medium is a rewritable recording medium, and the capacity of the unit can be easily changed by erasing on a unit basis, while the number of sectors per block of each unit is changed from the inner circumference side to the outer circumference side. An information recording and reproducing apparatus which makes it possible to use one recording medium efficiently because the setting and fixing can be made larger as it is directed.

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